Lots and lots of walking is your best bet and bouncing on a gym ball
I'm in the same situation. I've started doing exercises on a fitball. Best, acc to my dr, is to have sex though (which I find impossible this late in pregnancy).
I've had a few nice days I think I'll try that walking lol. Thank you. :)
Start walking a lot like around the block if its not to cold where you are and sometimes sex helps